The Molecular Structure of 2-Chloro-4-fluorotoluene (CAS NO.452-73-3):

Empirical Formula: C₇H₆ClF
Molecular Weight: 144.5739
Nominal Mass: 144 Da
Average Mass: 144.5739 Da
Monoisotopic Mass: 144.014206 Da 
Index of Refraction: 1.502
Molar Refractivity: 35.96 cm³
Molar Volume: 121.8 cm³
Surface Tension: 31.1 dyne/cm
Density: 1.186 g/cm³
Flash Point: 50 °C
Enthalpy of Vaporization: 37.58 kJ/mol
Boiling Point: 155.2 °C at 760 mmHg
Vapour Pressure: 3.94 mmHg at 25°C 
IUPAC Name: 2-chloro-4-fluoro-1-methylbenzene   
Appearance: colorless to light yellow liquid
Product Categories: Fluorin-contained toluene series;Aromatic Halides (substituted);Benzene series;Halogen toluene;Miscellaneous;Chlorine Compounds;Fluorine Compounds;Aryl;C7;Halogenated Hydrocarbons 
Synonyms: 4-Fluoro-2-chlorotoluene ; Benzene, 2-chloro-4-fluoro-1-methyl- ; 2-Chloro-4-fluorotoluene,98% ; 2-Chloro-4-fluorotoluene 98% ; 2-Chloro-3-fluorotolu ; 1-Chloro-5-fluoro-2-methylbenzene  

Hazard Codes: XiF
Risk Statements: 10-36/37/38 
R10: Flammable
R36/37/38: Irritating to eyes, respiratory system and skin
Safety Statements: 16-26-36/37/39-36 
S16: Keep away from sources of ignition
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection
S36: Wear suitable protective clothing
RIDADR: UN 1993 3/PG 3
WGK Germany: 3
Hazard Note: Irritant/Flammable
HazardClass: 3
PackingGroup: III
2-Chloro-4-fluorotoluene (CAS NO.452-73-3) may cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated. Causes irritation of mucous membrane. Vapors may cause dizziness or suffocation.It may also causes skin or eyes irritation.

Flash Point: 49
Fire Fighting: Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Use agent most appropriate to extinguish fire. Do NOT use straight streams of water.
Personal Protection: Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.